Theory of Intelligence
11TH•Mathematics•Trigonometric Identities•Question 4

(iii)

Prove that:

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(iii)

cos⁡(90∘+θ)sec⁡(−θ)tan⁡(180∘−θ)sec⁡(360∘−θ)sin⁡(180∘+θ)cot⁡(90∘−θ)=−1\dfrac{\cos(90^\circ + \theta)\sec(-\theta)\tan(180^\circ - \theta)}{\sec(360^\circ - \theta)\sin(180^\circ + \theta)\cot(90^\circ - \theta)} = -1

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